Apparatus for cutting metal and other materials



July 21, 1931. "J. JAMIESON APPARATUS FOR CUTTING METAL AND OTHER-MATERIALS Filed-July 18, 1928 '2 Sheets-Sheet 1 zit" Joseph IamLeson INVENTQK Gu July 21, 1931. I J, JAMIESQN I 1,815,736

APPARATUS FOR CUTTING METAL AND OTHER MATERIALS Filed July 18, 192a 2 Sheets-Sheet 2 C III a W i 2/ i 5 36 2 i I] i 30 8\fl{lll 27 29 26 I 3 n I 24 Jose h Jdm mson INVENTOK k 4 Try,

Patented July 21, 931

' OSEPH JAMIESINI.OF BALMAIN',

'NEAR'VSYDNEIY, ew SOUTH WALES, AUSTRALIA ArrARnTus roncurrrivemuran Ann OTHER MATERIALS Applicationfileli ul -1s, 1928; Serial No. 1293,623, and in. Australia September 1631927.

This invention relates to apparatus adapt.-

' ed primarily for cutting metal though also adaptable for cutting thin leaves of wood, cardboard, or other materials.

Sa d apparatus comprises a mould, form,

ordie block of any design, material, or dimensions, with aiwork face or faces of any suitable pattern or patterns. Such mould, form, or die block may have associated therewith'means whereby a piercer'and a cutter can be elevated or lowered in relation tothe die block and when loweredpressure may be applied to both the piercer and the cutter, or whereby a cutter can be elevated or lowered in relation to the die block and pressure applied to the cutter. I When pressure is so applied the piercer can enter the material to be cut and alsoacentral guide hole in the die-block and the cutter will thus be enabled to cut the said. material; to desired shape. The foot of the piercer is shaped or sharpenedto enable it topenetrate the material which is being operated upon. If required the material may firstbe provided with a central opening and then placed on i the dielblock when upon pressure being applied to the piercer and the cutter, the piercer will pass through said opening into the guide hole in the die block and the material will be cutto desired shape by the cutter. When, however, the piercer is not provided the die block need not be provided with a central opening.

Instead of applying pressure to the piercer and the cutter, or to the cutter only, thehead of the piercer or the cutter or an associated element thereof may be struckby a hammer or other suitable instrument after the material to be cut andthe piercer and the cutteror the latter only have been assembled in proper relation .to eachother, whereby the material operated on maybe pierced/and cut to shape, or if pierced, may be cut to required shape, or ifnot pierced may be cut to shape. I

In every case the material is cut to the shape or form of the pattern on the mould, "form, or die block. Asthe operative face of the cutter is hollow, in certain cases it maybe necessary to fit such face with rubber or, other and with operative 'faces,'the block 1 may be the centreof a 'on the head of piercer 6 has suitablyfitted theretoa cutter suitable means whereby blanks cut from mamay be disconnected terial operated upon from the cutters when the cutting operation Fig."1-is'a perspective view of one I I apparatus in which a die block is shown provided with central guide hole for a piercer cutter faces, the piercer with cutter and die block being disassociated from each other; Fig. 2 elevational view partly in section corresponding with Fig. 1 and showin the piercer with cutter anddie block assem ledfor cutting operation; Fig. 3 detail View illustrating cutting operation of a metal blank with apparatus shown in Figs. 1 and 2; Fig. 4; perspective view of article cutto required form; Fig. 5 view of alternative form of apparatus to that shown in Figs. 1 to 3;:andFig'. 6elevational view partly in section of cuttingapparatu's in which pierci ng means are not used; I

With reference to Figs. 1 to 4, the metal mould, form, or. die block 1 may beof'any suitable? type; in such Figures it is shown of circular formation with'a series ofconcentric grooves 2 in theupper and lower facesthere- 0f Such grooves may bejprovided in one face only of thelblock 1;

reversed for special cuttingoperation's on blanks. The grooves 2 have inclined outer walls 3 and chamfered inner walls 4. i i

opening 5 for a piercer 6 whose forward'end I may be shaped to enable it toreadilycut into blank 7 which may be located the'block 1 as required. The

8 and its upper portion 9 may be of larger diameter than its actual piercing portion, a

if provided in both] f Centrally of the block 1 is afguide through collar 10 being provided between the portion I 9 and the cutter 8. I I I 'Inthe'block 1 there are a series of openings 11, adapted to receive centering screws 12 or screws securableto the support 13 which has a central opening'14 into which the piercer 6 i may project in cutting operations on blanks Suchblanks when out into articles by the apparatus are shown in Fig. 4; said articles have central opening Such opening 15 may be made by the piercer 6, or before cutting, the blanks 7 for the articles may have said opening 15 made therein. I i [To cut articles from the blanks 7 when the latter are assembled on the block 1, it is only necessary, to strike the head of the portion 9 of the piercer 6 with ahammer or other suitable implement whereby the cutting faces of the cutter 8 willsever the blanksat the portions of'the grooves 2 of the block 1- with which the said cutting faces coincide. A

' series .of cutters 8 can be provided to'fit the piercer 6 and whose cutting faces are respec tively'adapted to coincide with the grooves 2 ofthe'block 1. Thecutters 8 are recessed about their operative faces and such recessed portion thereof may carry a rubberor other suitable resilient packing disc 16 to enable cut articles from blanks to be disassociated from the cutters after the cutting operation of blanks 7 has been completed.

v The alternative construction of apparatus shown in Fig. 5 is similar to that shown in Figs. 1 to 4, but the piercer 17 shown therein has a screw-threaded shank 18 which fits a tapped opening in the die block 1. The upper portion 19 of'the piercer 17 is'also fitted with a turning-spindle 20. Cutting of blanks "blankafter passage of implement or by otherwise exerting pressure on the head of the portion 37 of the spindle 26, the spring 31 serving to returnthe spindle 26 to normal position, and the resilient disc enabling cut articles to be disassociated from the cutter 28.

What I claim as my invention and desire to secure by Letters Patent is V Cutting apparatus comprising an alignable metal die having an opening centrally thereof and a series of concentric cutting grooves therein, each of said grooves forming acomplete circle, the outer w-alls of each of said grooves being inclined and the inner walls thereof being chamfered, a piercer adapted to enter said opening in the die dur- 7-With this form of apparatus 'is'eff-ected by turning the piercer 17v through thespindle 20 whereby the cutter 8-will operate on and cut i a blank 7 to produce an article such as that shown in Fig. 4: with central opening 15.

'When the article Eto-be produced is not to be furnished with acentral opening 15, apparatus such as that shownin Fig. 6 maybe utilized for cutting the blanks 36 to allow 'articles to be'produced-to required shape. ,Such

apparatus may compriseabracket21 having a-foot plate 22 in which may bea central opening 23- I Such bracket 21-niay be suitably aflixed toa support. The dieblock24: may

have a central opening 25 .brsuch opening may be omitted; The bracket 21 serves as a bearing for a spindle 26-whichmay-have attachedthereto, by a pinching screw or screws 27, the recessed cutter 28 with cutting faces 29 and carrying resilient disc 30. The upper portion 37 of the spindle 26 may be enlarged'an'd it may carry a collar 32 against which may abut ione end of-the coilspr-ing 31 which encircles suchxportion of the-spindle 2.6, the other endof the said spring being adaptedto abut portion of the bracket 21.

The .die block 2tinay have a series of grooves I 33 similar to those previously described and I the foot plate 22 may. have centering pins 3e adapted to enter openings 35 in the die block 24,01 such pins may besubstituted byscrews adapted to be securedto the foot plate 22 and to the block 24, T

, Blanks 36 may striking the head of the portion 37 of the spindle 26 withahammer or other suitable be cutto requiredsha-peby 

